Windows Vista: Dead OpenGL

I've been using Vista builds for quite some time now, but after doing a major hardware update, including motherboard, I had to reinstall it. I'm not sure wether it's the motherboard or video card(my first time using ATI instead of nVidia), but no game which uses OpenGL works, even though they worked just fine on the old Vista, before I freshly re-installed it. It's the same build too. I tried uninstalling the ATI Catalyst driver, but again same problem. I don't know why, since they worked just fine on Vista before this re-install. All GL wrappers I've tried failed me, except GLdirect. The only viable solution I found was GLdirect, which emulates OGL using D3D, but it costs. Could anyone help me diagnose/fix my problem?

 

The Vista Catalyst Drivers are in Beta stage.
In the Release Notes:

 

Okay, so they're beta. Then why does the issue persist even with them uninstalled?

 

From Slashdot:

It's basically because of the crappy OpenGL implementation in Vista.

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